With Lucy and Ryan's love hanging in the balance, here's a look back at Lucy's other doomed relationships.

Engagement to Mario Falcone

Lucy with ex-fiance Mario Falcone (Image: Instagram / mariofalcone17)

Lucy and Mario were once the power couple of TOWIE, and they solidified their glittering status by getting engaged in June 2012.

Mario dropped to one knee and proposed on a rose petal-strewn yacht in Marbella while the cameras were rolling - and Lucy was all too happy to accept his enormous square-cut diamond ring.

But the couple were plagued by rumours of cheating on both sides, and split for good in May 2013 - with Lucy reacting furiously to the news Mario had already moved on with other girls just a week after they finished.

Lucy enjoyed a string of dates with Billy - but insisted there was no romance (Image: FameFlynet)

She also hinted she was on the lookout for love during her time on the BBC show, telling an interviewer: "I don't know if I was hoping to meet someone on Tumble – maybe if I had a big hunky 6ft 2in gymnast I might. But I don't."

Of course, that turned out to be a bit of a porky pie, as Lucy was soon being linked to one of her buff co-stars...

Shock relationship with Louis Smith

Lucy and Tumble judge Louis went public after the show (Image: Instagram / Lucy Mecklenburgh)

Lucy met none other than Olympic gymnast Louis Smith during her August 2014 Tumble stint, and they finally went Instagram official after weeks of speculation.